public DeploymentPlannerBuilder contributors(Set<Method> contributors) {
   planner.contributors = contributors;
   return this;
 }
 public DeploymentPlannerBuilder postProcessors(List<Method> postProcessors) {
   planner.postProcessors = postProcessors;
   return this;
 }
 public DeploymentPlannerBuilder typeContributors(
     ListMultimap<Operation, Method> typeContributors) {
   planner.typeContributors = typeContributors;
   return this;
 }